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JBL GTO939 6"x9" 3-way car speakers

Item # 109GTO939

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3 questions - 8 answers

Item # 109GTO939

About the JBL GTO939

Alexander H.
JBL GTO939

Go for it

If you're in the market for new speakers, you've just found a serious contender. JBL created their GTO939 6"x9" speakers as a hi-fi solution for those who want better sound in their vehicle.

JBL innovation

You'll find JBL's unique Plus One woofer cone design at work here, which expands the diaphragm area of the cone to give you better low-frequency response. Edge-driven soft dome tweeters and supertweeters ensure a rich experience in the upper frequencies, defined by a bright, open quality. JBL builds in a UniPivot™ design that allows you to aim the tweeter's sound more directly at your ears, giving you a more detailed soundstage. You can also use the adjustable level control to tweak your tweeters to your liking, so the GTO939's sound is customized to your car.

These JBLs offer slightly lower impedance than standard car speakers, so they'll safely draw a little more power from your car stereo, yielding big volume even with low-powered factory radios. But if you want to blast these babies, they'll handle up to 100 watts RMS from an outboard amplifier.

Product highlights:

  • 6"x9" 3-way speakers (pair)
  • carbon-injected Plus One™ woofer cone with butyl rubber surround
  • edge-driven silk dome tweeter and supertweeter with adjustable tweeter level
  • power range: 5-100 watts RMS (300 watts peak power)
  • impedance: 3 ohms
  • frequency response: 46-21,000 Hz
  • sensitivity: 94 dB
  • top-mount depth: 2-13/16"
  • grilles included
  • warranty: 1 year
  • MFR # GTO939

What's in the box:

  • Two 3-way speakers
  • 2 Bottom mount adapters
  • 2 Grilles
  • 2 JBL logo badges
  • 2 Adhesive backed foam gasket strips
  • Eight 1-3/8" Self-tapping Allen head screws
  • 3mm Allen head bit
  • 8 Speed clips
  • Instruction manual

Customer reviews for JBL GTO939

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Average review:

4.5 out of 5 stars
6 reviews

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More details on the JBL GTO939

Pat M.

Features & specs

General
Speaker Size 6X9
Design 3-way
Tweeter Design Edge-Driven Dome
Impedance (Ohms) 3
Tweeter Composition Silk
Woofer Composition Carbon-injected
Woofer Surround Butyl Rubber
Parts Warranty 1 Year
Labor Warranty 1 Year
Specifications
Sensitivity (1W at 1 meter) N/A
Sensitivity at 2.83 volts 94
Frequency Response 46 - 21k Hz
Minimum RMS Wattage 5
Maximum RMS Wattage 100
Peak Power Handling (Watts) 300
Top-mount Depth (Inches) 2 7/8
Bottom-mount Depth (Inches) 3 9/16
Cutout Diameter or Length (inches) 0
Mounting Height (Inches) 0.867
Frame Width 6.737
Frame Length 9.546

Product Research

Features

Plus One Woofer Cones: The Plus One speaker cones offer more surface area than other speakers that fit in the same size opening. This is accomplished by using a new basket design and hi-roll surround. The result is greater bass output and an increase in efficiency.

Tweeters: The tweeter structure, containing the tweeter and super tweeter, is angled, so it can be directed toward the listeners in most cases. You can also adjust the tweeter output level; choose between 0 (flat) and +3 dB to compensate for off-axis mounting positions or road noise.

FRP Frames: The fiberglass-reinforced plastic (FRP) frames used in the GTO series speakers resist warping, even when mounted on uneven surfaces. The nonmagnetic carbon composite has no impact on the motor structure and doesn't resonate.

High-Output Design: The 3Ω voice coil design compensates for the high in-line resistance of small gauge factory wiring, extracting more power from factory (or aftermarket) receivers. This results in clearer, richer sound for the listener.

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Customer Q&A

3 questions already asked

Q
Why don't you sell the JBL 938? It shows six times in the top ten out of nine different "2017 best 6x9's" online reviews.
lawrence  Aug 01, 2017
1 answer
A
Per the JBL website, the GTO938's are no longer offered for purchase as they were replaced by the GTO939. The GTO939's were designed similarly to previous GTO speaker models, so I expect any positive reviews for the GTO938's can also be applied to the newer GTO939 models. For more details or to discuss further, please feel free to contact an Advisor directly by phone (888.955.6000) or online chat. Hope that helps!
david  Aug 08, 2017 (Staff)
Q
do these speakers need to be ran with an amp? If so, what size would be ok?
david  May 17, 2017
6 answers
A
I put these in my sons 2015 Toyota Corolla with a Blaupunkt GTA 270 DSP. The Amp pumps out 70watts per Channel RMS. which is plenty . I have the amps gain only half way up and it's loud but as others mention be careful with the bass they are not subs.
jesus  Jun 14, 2017
A
No amp is needed to run these speakers, although currently I am using a receiver that pumps out 22 watts x 4 RMS, and the sound is heaven!!
michael  May 19, 2017
A
NO AMP NEEDED..
tony  May 18, 2017
A
I ran mine with an amp. They are very strong, be careful!!!
dan  May 18, 2017
A
They will preform best running off an amp. I am running them off a Rockford Fosgate PBR300X4 because of the size, but it is no longer available. The size of the amp depends on how many speakers you will be running off the amp. I would figure out how many watts you will be running and then call one of Crutchfield's advisors for the best options currently available.
jason  May 17, 2017
A
I don't know if they need to be but I am using a 75 watt RMS amp to power them.
richard  May 17, 2017
Q
I would love to fit these speakers in the rear deck of my 1998 Honda Accord. Might I modify the deck opening (drill new mounting holes, etc) to facilitate these speakers? Or is there another "fit" problem I'm not aware of?
bill  Apr 27, 2015
1 answer
A
For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
kristina  Apr 28, 2015 (Staff)

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